rosssti

iTrader: (1)

as above, im running 360/340, but at the wheels im only getting 270bhp...
thats a 90bhp loss, ive seen alot of scoobys loose around 50bhp but isnt 90 a hell of alot??

TonyBurns

iTrader: (3)

Tyres, none dccd car, the way the rolling road calculates the power on drag etc, lots of factors, just to put it into perspective, my last Spec C ran 316bhp and put 255bhp on the road, so a 61bhp loss which is about 19% loss but she had DCCD as standard, your loss is about 25%, but isnt yours an MY03 UK car with visious coupling diff?

Tony

rosssti

iTrader: (1)

its a 2001 uk300, not a clue about the diff pal,,
any idea`s how i can reduce this loss? will a flywheel (lighter)reduce and loss at all??

banny sti

iTrader: (68)

Get a dccd gearbox to reduce transmission losses, as Tony states above a fully open dccd diff has lower transmission losses than the standard viscous 50/50 diff.

Banny

prodriverules

iTrader: (52)

17 to 22% is about average so yours isnt to far away mate not alot you can do without spending big

TonyBurns

iTrader: (3)

Ross, are you running bigger 18 inch wheels? that can produce drag if you are (and wider tyres).

Tony

rosssti

iTrader: (1)

i am pal, 2254018 standerd prodrive wheels,,